Anti-Listeria bacteriocin

Abstract

The invention concerns an isolated polypeptide which is a bacteriocin called Sakacin G derived from Lactobacillus sakei 2512. The invention also concerns a nucleic acid molecule encoding for said bacteriocin and the use of said polypeptide as an active agent against pathogenic and undesirable flora in the preparation of food products.

1. An isolated strain  Lactobacillus sakei  2512 deposited on May 23, 2000 with the Collection Nationale De Cultures De Micro-organismes (CNCM), Institut Pasteur, France, under deposit number I-2479. 
     
     
       2. A bacteriocin composition that comprises the strain  Lactobacillus sakei  2512 deposited on May 23, 2000 with the Collection Nationale De Cultures De Micro-organismes (CNCM), Institut Pasteur, France, under deposit number I-2479. 
     
     
       3. A method for inhibiting the growth and propagation of  Listeria  in a food product, which method comprises incorporating the strain  Lactobacillus sakei  2512 deposited on May 23, 2000 with the Collection Nationale De Cultures De Micro-organismes (CNCM), Institut Pasteur, France, under deposit number I-2479 in the food product to generate a bacteriocin activity against  Listeria.